Clamp



No Model.)

W. S. GUBELMANN. CLAMP.

Patented Feb. l5, 1898.

WZ-:Lcssesf i| nvngol @fai/www, jf www UNITED STATES PATENT OFFICE.

WILLIAM s. GUBELMANN, oE BIIEEALo, NEw YORK.

CLAMP.

SPECIFICATION forming part of Letters Iatent No. 599,039, dated February 15, 1898. Application filed February 19, 1897. Serial No. 624,091. (No model.)

To @ZZ whom it may concern:

Beit known that I, WILLIAM S. GUBELMANN, a citizen of the United States, residing at Butfalo, in the county of Erie and State of New vYork, have invented a new and usefullmprovement in Clamps, of which the following is a specification.

This invention relates to a clamp which is more especially designed for connecting tubular bars-for instance, the tubular members of a velocipede.

The object of my invention is the production of a clamp for this purpose which is very simple and inexpensive in construction and which enables two members to be readily and reliably connected.

In the accompanying drawings, Figure lis a vertical section showing myim proved clamp used for adj ustably securing the saddle shank or stem in the saddle post or pillar of a velocipede-frame. Fig. 2 is a similar view showing this clamp used for detachably connecting the upper front bar with the'saddle-post of a velocipede-frame. Fig. o is a vertical transverse section showing my invention applied for adj ustably connecting a velocipede handle-bar with its shank'and adjustably connecting the latter with the steering-head of a velocipede. Fig. 4 is a horizontal section in line 4 4, Fig. 3. Figs. 5 and 6 are detached side elevations of the two clamping members. Fig. 7 is an end view of one of the clamping members. Fig. S is a fragmentary longitudinal section, on an enlarged scale, of one of the clamping members. Fig. 9 is a side View of the stop or collar which forms an abutment for one of the clamping members.

Like letters of reference refer to like parts in the several iigures.

Referring to Figs. l and 4 to 9, A represents the upright tubular saddle-post of a velocipede-frame; B, the upper front bar; C, one

of the members of the upper rear fork; D, the

i fitting or coupling which connects these parts,

and E the stem or shank of the saddle which is arranged in the upper end of the saddlepost.

F F represent two tubular clamping members which surround the saddle-shank within the saddlepost and which are arranged one above the other. Each of these clamping members consists of a supporting collarv or body fand an annular row of longitudinal jaws f', projecting from one side of the collar. Each jaw is provided with an incline f2, which extends outwardly from its end, and the inner edge of the collar is provided between the jaws with inclines f3, extending incollar, whereby the free ends of both sets of jaws are deflected inwardly and caused to bind against the inner side of the saddlestem, thereby gripping the same at a number of points and holding the same rigidly in place .in the saddle-post. The lower clamping memlberabuts with its lower or outer end against a shoulder on the inner side of the saddlepost, so as to hold it against downward movement. This shoulder may be formed in any suitable way-for instance, by a ring or collar g, whichis secured to the inner side of the saddle-post by riveting, brazing, or otherwise. In order to hold the lower clamping member against turning` in the saddle-post, the lower edge of its collar is provided with teeth or serrations h, which interlock with similar serrations h' on the stop-collar.

I represents a clamping sleeve or collar whereby the upper clamping member is moved lengthwise toward the lower clamping member. This clampingfsleeve surrounds the saddle-shank above Vthe upper clamping member and is provided with an external screwthread which engages with the internallyscrew-threaded upper end of the saddle-post.

v j is a washer interposed between the clamp- Upon loosening the clamping IOO end of one of the clamping members bears against an internal shoulder la in the nipple and the externally-screw-threaded clampingsleeve engages with an internal screw-thread on the nipple.

When utilizing my invention as a handle` bar adjustment, as shown in Fig. 3, the clamping devices are arranged between the handlebar L and the eye Z at the upper end of the handle-bar shank Z, in which case the eye is provided at one end with a shoulder Z2,against which the stationary clamping member engages, and at its opposite end wit-h an internal screw-thread which receives the clampingsleeve. In applying the clamping devices for adj ustably securing the handle-bar shank in the steering-head M the latter is provided with a shoulder m for the lower clamping member to abut against and a screw-thread for the reception of the clamping-sleeve.

I claim as my invention- 1. In a clamp,the combination of two clamping members, each of which consists of a supporting collar or body having an annular row of jaws, the jaws of one body being arrangedl between the jaws of the other body and each jaw being provided with an incline which engages with an incline on the opposing body, substantially as set forth.

2. The combination with an outer tubular member and an inner tubular member arranged within the outer member,of two clamping members arranged between the tubular members and each consisting of a collar or body having an annular row of longitudinal jaws, the jaws of one body being arranged between the jaws ofthe other body and each jaw having an incline which engages with an incline on the opposing body, an internal shoulder formed on the outer tubular member and supporting one of the clamping members, and a Vclamping-sleeve having a screw connection with the outer tubular member and bearing against the other clamping member, substantially as set forth.

3. The combination with an outer tubular member and an inner tubular member arranged within the outer member, of two clamping members arranged between the tubular members and each consisting of a collar or body having an annular row of longitudinal jaws, the jaws of one body being arranged between the jaws of the other body and each jaw having an incline which engages with an incline on the opposing body, an internal serrated shoulder formed on the outer tubular member and engaging with similar serrations on one of the clamping members, and a clamping-sleeve having a screw connection with the outer tubular member and bearing against the other clamping member, substantially as set forth.

Witness my hand this 23d day of January,

WILLIAM s. GUBELMANN. Witnesses:

THEO. L. POPP, ELLA R. DEAN. 

